CN201404312Y - Thighbone stem prosthesis with wing-shaped spine - Google Patents
Thighbone stem prosthesis with wing-shaped spine Download PDFInfo
- Publication number
- CN201404312Y CN201404312Y CN2009201059399U CN200920105939U CN201404312Y CN 201404312 Y CN201404312 Y CN 201404312Y CN 2009201059399 U CN2009201059399 U CN 2009201059399U CN 200920105939 U CN200920105939 U CN 200920105939U CN 201404312 Y CN201404312 Y CN 201404312Y
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- CN
- China
- Prior art keywords
- thighbone
- stem
- prosthesis
- wing
- stem body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a thighbone stem prosthesis with wing-shaped spine, which consists of a thighbone stem head part and a thighbone stem body, wherein the upper end of the thighbone stem bodyis provided with a bolt fixing hole connected with a surgical instrument; two sides of the thighbone stem body are a symmetrical planar structure, and a protruding wing-shaped spine is arranged on the symmetrical plane. By designing the thighbone stem body into the symmetrical planar structure and adding the wring-shaped spine, the anti-rotation capability and stability of the thighbone stem prosthesis are improved, thus better matching the thighbone stem body with the geometrical shape of a near-end medullary cavity of the thighbone and being beneficial to the growing of the bone. Sand blaston the surface of the thighbone stem prosthesis can effectively play the role of anti-sinking, thus being beneficial to osseointegration. The design of an arc structure between the symmetrical planesmatches the thighbone stem prosthesis with the shape of the near-end medullary cavity of the thighbone. The coronal plane and sagittal plane stem bodies of the thighbone stem prosthesis are both designed into 3-degree tapers and matched with the medullary cavity of the thighbone, thus guaranteeing good biological stationarity and anti-rotation stability.
Description
Technical field
This utility model relates to a kind of type femoral bone end prosthesis, specifically a kind ofly helps that bone is grown into and integration, the anti-rotational type femoral bone end prosthesis that has wing ridge.
Background technology
The hip joint patient is after implanting the artificial hip joint femoral shaft prosthese of selling the existing market, the patient is in active process, when especially becoming stance by sitting posture, the artificial hip joint femoral shaft prosthese need bear very big torsion, cause the femoral stem top rake to change, and then cause the femoral stem body implanted loosening, make patient's limitation of activity, more seriously cause operative failure to need second operation, cause unnecessary misery to the patient.
At present, existing commercially available type femoral bone end prosthesis is formed by femoral stem head and femoral stem body, in order to guarantee patient's activity, need guarantee that femoral stem tuberosity transverse axis and femur ankle transverse axis angle are 10～15 degree.But there is following defective in the existing structure of this kind: the conical structure of femoral stem body can not prevent effectively that type femoral bone end prosthesis from sinking or rotation.
In sum, can prevent effectively that the structure that type femoral bone end prosthesis rotates from being the focus that those skilled in the art study always.
The utility model content
The purpose of this utility model is to provide a kind of bone that helps to grow into and integrate, and the type femoral bone end prosthesis that has wing ridge that effectively prevents the type femoral bone end prosthesis rotation can be arranged.
To achieve these goals, invention thinking of the present utility model is, in order to prevent that type femoral bone end prosthesis body rotation significant feature position from still being the femoral stem body portion, therefore inventor of the present utility model improves the femoral stem body, through experimental studies have found that repeatedly, single increase friction area can not effectively prevent the rotation of femoral stem body, rotary torsion need be evenly distributed, make femoral stem body each point stressed evenly, every stressed diminishing can effectively prevent the rotation of femoral stem body, but, the simple protruding point that increases not is best solution, because the conical design of femoral stem body itself be exactly be unfavorable for anti-rotational, therefore the increase in conjunction with stress point is designed to the anti-rotate effect the best of non-conical structure with the femoral stem body, under this kind structure, blasting treatment is carried out on the type femoral bone end prosthesis surface, thereby realized the technical scheme of anti-rotate effect the best.
In order to realize the purpose of this utility model, this utility model adopts following concrete technical scheme:
A kind of type femoral bone end prosthesis that has wing ridge, it is made up of femoral stem head and femoral stem body, is provided with the bolt hole that is connected with operation tool in femoral stem body upper end; Described femoral stem body both sides are the symmetrical plane structure, and this symmetrical plane is provided with outstanding wing ridge.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge, wherein, described wing ridge extends to femoral stem body near-end.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge, wherein, described wing ridge height is 1～2 millimeter.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge, wherein, the angle of described wing ridge is 60 degree.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge, wherein, described type femoral bone end prosthesis surface is the rough surface of blasting treatment.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge wherein, is the curve arc structure between described femoral stem body two symmetrical planes.
Above-mentioned a kind of type femoral bone end prosthesis that has wing ridge, wherein, the coronalplane of described femoral stem body and sagittal and be 3 the degree pyramidal structures.
Above-mentioned type femoral bone end prosthesis can be designed as different model, increases progressively with three-dimensional 1 millimeter between each model, can increase alternative.
Advantage of the present utility model and benefit:
This utility model is designed to the femoral stem body structure of symmetrical plane, on symmetrical plane, further designed wing ridge, and the process repetition test has drawn the optimum height and the angle of wing ridge, this kind structure has increased the anti-rotation performance and the stability of type femoral bone end prosthesis, thereby better type femoral bone end prosthesis and near end of thighbone pulp cavity geometry are complementary, help bone and grow into.The blasting treatment on type femoral bone end prosthesis surface increases surface roughness, can effectively play the effect of anti-sinking, has increased the degree of stability of type femoral bone end prosthesis, helps bone and integrates.Curve arc structure design between the symmetrical plane is complementary type femoral bone end prosthesis and near end of thighbone pulp cavity shape.The coronalplane of this utility model type femoral bone end prosthesis and sagittal plane handle body are 3 degree conical design, with the femoral bone cavitas medullaris coupling, have guaranteed good biological fixation and anti-rotational stability.
Foregoing has illustrated the technical solution of the utility model and beneficial effect fully, below in conjunction with the drawings and specific embodiments this utility model is done further narration, so that the public is to having more deep understanding in the utility model, the embodiment of the specific embodiment is best technical scheme, and is not to restriction of the present utility model.
Description of drawings
Fig. 1 is a main TV structure sketch map of the present utility model;
Fig. 2 is a left TV structure sketch map of the present utility model;
Fig. 3 is this utility model stereoscopic-state sketch map.
The specific embodiment
Shown in Fig. 1 and 2, a kind of type femoral bone end prosthesis that has wing ridge, it is made up of femoral stem head 1 and femoral stem body 2, is provided with and operating theater instruments fastening screw keyhole 3 in femoral stem body 2 upper ends; Wherein, described femoral stem body 2 both sides are symmetrical plane 21, and this symmetrical plane 21 is provided with outstanding wing ridge 22.
Above-mentioned wing ridge 22 extends to the femoral stem near-end.Wing ridge 22 highly is 1～2 millimeter, and angle is 60 degree.
Above-mentioned type femoral bone end prosthesis surface is the rough surface of blasting treatment.
Between 2 liang of symmetrical planes 21 of above-mentioned femoral stem body is curve arc structure 23.The coronalplane of femoral stem body 2 and sagittal plane are 3 degree pyramidal structures.
Above-mentioned type femoral bone end prosthesis can be designed as different model, increases progressively with three-dimensional 1 millimeter between each model, can increase alternative.
This utility model in use, femoral stem body 2 both sides are symmetrical plane 21, this symmetrical plane 21 is provided with outstanding wing ridge 22, this kind structural design has increased the anti-rotation performance and the stability of type femoral bone end prosthesis, thereby better type femoral bone end prosthesis and near end of thighbone pulp cavity geometry are complementary, help bone and grow into.The blasting treatment on type femoral bone end prosthesis surface increases surface roughness, can effectively play the effect of anti-sinking, has increased the degree of stability of type femoral bone end prosthesis, helps bone and integrates.Curve arc structure 23 designs between the symmetrical plane 21 are complementary type femoral bone end prosthesis and near end of thighbone pulp cavity shape.The coronalplane of this utility model type femoral bone end prosthesis and sagittal plane handle body are 3 degree conical design, with the femoral bone cavitas medullaris coupling, have guaranteed good biological fixation and anti-rotational stability.
Claims (7)
1, a kind of type femoral bone end prosthesis that has wing ridge, it is made up of femoral stem head and femoral stem body, is provided with the bolt hole that is connected with operation tool in femoral stem body upper end; It is characterized in that described femoral stem body both sides are the symmetrical plane structure, this symmetrical plane is provided with outstanding wing ridge.
2, a kind of type femoral bone end prosthesis that has wing ridge according to claim 1 is characterized in that, described wing ridge extends to femoral stem body near-end.
3, a kind of type femoral bone end prosthesis that has wing ridge according to claim 2 is characterized in that, described wing ridge height is 1～2 millimeter.
4, a kind of type femoral bone end prosthesis that has wing ridge according to claim 3 is characterized in that, the angle of described wing ridge is 60 degree.
According to any described a kind of type femoral bone end prosthesis that has wing ridge in the claim 1 to 4, it is characterized in that 5, described type femoral bone end prosthesis surface is the rough surface of blasting treatment.
6, a kind of type femoral bone end prosthesis that has wing ridge according to claim 5 is characterized in that, is the curve arc structure between described femoral stem body two symmetrical planes.
7, a kind of type femoral bone end prosthesis that has wing ridge according to claim 6 is characterized in that, the coronalplane of described femoral stem body and sagittal plane are 3 degree pyramidal structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201059399U CN201404312Y (en) | 2009-02-18 | 2009-02-18 | Thighbone stem prosthesis with wing-shaped spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201059399U CN201404312Y (en) | 2009-02-18 | 2009-02-18 | Thighbone stem prosthesis with wing-shaped spine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201404312Y true CN201404312Y (en) | 2010-02-17 |
Family
ID=41675229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201059399U Expired - Lifetime CN201404312Y (en) | 2009-02-18 | 2009-02-18 | Thighbone stem prosthesis with wing-shaped spine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201404312Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871777A (en) * | 2012-09-26 | 2013-01-16 | 无锡市诚信洗选设备有限公司 | Anti-rotation anti-subsidence hip joint pseudo-stem |
-
2009
- 2009-02-18 CN CN2009201059399U patent/CN201404312Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871777A (en) * | 2012-09-26 | 2013-01-16 | 无锡市诚信洗选设备有限公司 | Anti-rotation anti-subsidence hip joint pseudo-stem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING AKEC MEDICAL CO., LTD. Free format text: FORMER NAME: BEIJING AIKANG YICHENG MEDICAL EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 102200 Beijing Changping District Science Park Road No. 10 Bai Fu industrial building two layer Patentee after: Beijing AKEC Medical Co.,Ltd. Address before: 102200, 8 innovation road, Changping District science and Technology Park, Beijing Patentee before: Beijing AKEC Medical Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |
|
| CX01 | Expiry of patent term |